The power assisting device comprises a vacuum power assisting unit and a brake master cylinder unit, the brake master cylinder unit comprises a master cylinder body, a first piston, a feedback ejector rod, a feedback piston, a first return spring, a feedback return spring, a second piston and a second return spring, and the first piston, the feedback ejector rod, the feedback piston, the first return spring, the feedback return spring, the second piston and the second return spring are arranged in the master cylinder body. The first piston abuts against the vacuum boosting unit, the diameter of the first piston is larger than that of the feedback piston, the cylinder diameter of the feedback piston is smaller than that of the second piston, the vacuum boosting unit generates servo force in the braking process to push the first piston to move forwards, and liquid discharged by the first piston enters the small-cylinder-diameter feedback piston cavity. The brake pressure can be increased under the conditions that the pedal force is not changed and the stroke is certain.

    本发明公开一种应用于车辆制动的助力装置,包括真空助力单元和制动主缸单元,其中,所述的制动主缸单元包括主缸体,以及设置在主缸体内的第一活塞、反馈顶杆、反馈活塞、第一回位弹簧、反馈回位弹簧、第二活塞、第二回位弹簧,所述第一活塞与真空助力单元抵接,所述第一活塞直径大于反馈活塞直径,所述反馈活塞缸径小于第二活塞缸径,制动时真空助力单元产生伺服力,推动第一活塞向前,第一活塞排出的液量进入小缸径反馈活塞腔,在满足踏板力不变和一定的行程情况下,可以增大制动压力。


    Access

    Download


    Export, share and cite



    Title :

    Vacuum power assisting device for vehicle braking


    Additional title:

    一种用于车辆制动的真空助力装置


    Contributors:
    LIU PEI (author) / WEN ZUOLI (author) / LAN KEZHI (author) / JIA XIANPENG (author)

    Publication date :

    2024-04-02


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B60T Bremsanlagen für Fahrzeuge oder Teile davon , VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF



    Braking Assisting Vacuum Pump

    European Patent Office | 2015

    Free access

    BRAKING ASSISTING VACUUM PUMP

    LEE HYUN KWON / KIM IN SANG / SONG DONG SUB | European Patent Office | 2015

    Free access

    Braking power assisting device for electric vehicle

    JI JIN | European Patent Office | 2015

    Free access

    Braking assisting device and vehicle

    WANG HUAKAI | European Patent Office | 2020

    Free access

    Vacuum power assisting device and method for automobile braking system

    KE JUN / ZHANG ZIHAO / ZHOU HUANQI et al. | European Patent Office | 2025

    Free access